strange prac today using nail polish.
we took a few leaves, and applied nail polish onto small areas on both the upper and lower surfaces of the leaf, then waited for it to dry.
once the nail polish was dry, we removed it using tweasers and looked at it under a microscope.
what we found was the imprint of the leaf on both sides, revealling that the lower surface of the leaf hand much more stomates (hundreds) than the top surface (about ten within that small area)
stomates are found under the leaf because it allows gaseous transfer without excessive loss of water.
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